Thanks so much for your response. I'm a bit concerned as I haven't been able to find out anything about Dr. Sigesmund, and don't know anyone who's seen him. I've seen 13 dentists so far (periodontists, prosthedontist, orthodontist, oral pathologist, etc.). When I started this process, I trusted that dentists knew what they were doing. I've learned that that is so not the case. Not one of them even suggested TMJ as a possibility. Yet, since having 2 fillings done 18 months ago, I'm now grinding my teeth and my teeth no longer fit together properly - 2 TMJD symptoms.
Several dentists checked for TMJ problems, but none did the stuff you mentioned. They just had me open my mouth, checked the up and down and side to side movements (which were okay). I think my problems are the muscles, but nobody checked those.
Reading this board has been a real eye opener and educator, as I'd started out thinking TMJ problems related only to the jaw bow.
Thanks also for mentioning the article about Dr. Sigesmund, as I haven't been able to get any information about him. I'll go to the library and check their archives.